Purchased 2002 626 in May 2006 with 57,000 miles. Car is in good to excellent shape. Getting about 23 MPG in mixed driving. Car has been very reliable and is a good comfortable road trip car for 4 people and plenty of luggage. 4 cylinder motor isn't all that powerful (the 2002 Altima has a much more powerful motor) and road noise is sometimes very noticeable.
Good interior space, comfortable seats, large trunk, decent styling, great highway ride.
Transmission is somewhat rough shifting and prone to transmission failure due to poorly designed transmission cooler which leads to tranny overheating and failure. 4 cylinder motor needs more horsepower to compete with Nissan, Honda, and Toyota. Needs more sound insulation - there's lots of tire roar.